<?php
/**
 * Main plugin bootstrap.
 *
 * @package AbilityGuard
 */

defined( 'ABSPATH' ) || exit;

/**
 * Main plugin class.
 */
final class Ability_Guard {

	/**
	 * Singleton instance.
	 *
	 * @var Ability_Guard|null
	 */
	private static $instance = null;

	/**
	 * Hook loader.
	 *
	 * @var Ability_Guard_Loader
	 */
	private $loader;

	/**
	 * Private constructor.
	 */
	private function __construct() {
		$this->load_dependencies();
		$this->define_admin_hooks();
		$this->define_core_hooks();
	}

	/**
	 * Get singleton instance.
	 *
	 * @return Ability_Guard
	 */
	public static function get_instance(): Ability_Guard {
		if ( null === self::$instance ) {
			self::$instance = new self();
		}

		return self::$instance;
	}

	/**
	 * Load required classes.
	 */
	private function load_dependencies(): void {
		require_once ABILITY_GUARD_PATH . 'includes/class-ability-guard-loader.php';
		require_once ABILITY_GUARD_PATH . 'includes/core/class-ability-guard-log-repository.php';
		require_once ABILITY_GUARD_PATH . 'includes/core/class-ability-guard-ability-scanner.php';
		require_once ABILITY_GUARD_PATH . 'includes/core/class-ability-guard-monitored-ability.php';
		require_once ABILITY_GUARD_PATH . 'includes/core/class-ability-guard-ability-registration-monitor.php';
		require_once ABILITY_GUARD_PATH . 'includes/core/class-ability-guard-logger.php';
		require_once ABILITY_GUARD_PATH . 'includes/core/class-ability-guard-alerts.php';
		require_once ABILITY_GUARD_PATH . 'includes/core/class-ability-guard-privacy.php';
		require_once ABILITY_GUARD_PATH . 'includes/admin/class-ability-guard-settings.php';
		require_once ABILITY_GUARD_PATH . 'includes/admin/class-ability-guard-admin.php';
		require_once ABILITY_GUARD_PATH . 'includes/admin/class-ability-guard-admin-actions.php';
		require_once ABILITY_GUARD_PATH . 'includes/admin/class-ability-guard-ability-table.php';
		require_once ABILITY_GUARD_PATH . 'includes/admin/class-ability-guard-log-table.php';

		$this->loader = new Ability_Guard_Loader();
	}

	/**
	 * Register admin hooks.
	 */
	private function define_admin_hooks(): void {
		$settings = new Ability_Guard_Settings();
		$admin    = new Ability_Guard_Admin();
		$actions  = new Ability_Guard_Admin_Actions();

		$this->loader->add_action( 'admin_init', $settings, 'register_settings' );
		$this->loader->add_action( 'admin_init', $actions, 'handle_admin_actions' );
		$this->loader->add_action( 'admin_menu', $admin, 'register_menu_pages' );
		$this->loader->add_action( 'network_admin_menu', $admin, 'register_network_menu_pages' );
		$this->loader->add_action( 'admin_enqueue_scripts', $admin, 'enqueue_assets' );
	}

	/**
	 * Register core hooks.
	 */
	private function define_core_hooks(): void {
		$logger = new Ability_Guard_Logger( new Ability_Guard_Log_Repository() );
		$alerts = new Ability_Guard_Alerts();
		$registration_monitor = new Ability_Guard_Ability_Registration_Monitor();
		$privacy = new Ability_Guard_Privacy( new Ability_Guard_Log_Repository() );

		if ( is_multisite() ) {
			$activator = new Ability_Guard_Activator();
			$this->loader->add_action( 'init', $activator, 'activate_site', 1 );
		}

		$this->loader->add_filter( 'wp_register_ability_args', $registration_monitor, 'monitor_registration_args', 10, 1 );
		$this->loader->add_action( 'wp_before_execute_ability', $logger, 'on_before_execute', 10, 2 );
		$this->loader->add_action( 'wp_after_execute_ability', $logger, 'on_after_execute', 10, 3 );
		$this->loader->add_action( 'ability_guard_after_log_insert', $alerts, 'maybe_send_alert', 10, 2 );
		$this->loader->add_action( 'ability_guard_send_scheduled_report', $alerts, 'send_scheduled_report' );
		$this->loader->add_filter( 'cron_schedules', $alerts, 'add_cron_schedules' );
		$this->loader->add_filter( 'wp_privacy_personal_data_exporters', $privacy, 'register_exporter' );
		$this->loader->add_filter( 'wp_privacy_personal_data_erasers', $privacy, 'register_eraser' );
	}

	/**
	 * Register all hooks with WordPress.
	 */
	public function run(): void {
		$this->loader->run();
	}
}